Respiratory System

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Across
  1. 3. tube that leads to the stomach
  2. 5. sacs in the lungs where gas exchange occurs
  3. 7. muscle below that lungs; helps to expand/contract while breathing
  4. 9. you breathe out this gas
  5. 12. back of the throat
  6. 13. hairlike structures that aid in filtering large objects
  7. 14. hangy-ball that blocks nasal passage when swallowing
  8. 15. you breathe in this gas
Down
  1. 1. spongy cone shaped organ; have 2 of them
  2. 2. hollow space behind the nose
  3. 4. branching of passageways in the lungs
  4. 6. tube that leads to the lungs; houses vocal chords
  5. 8. windpipe
  6. 10. consisting of mouth, teeth, tongue
  7. 11. flap that covers the larynx when swallowing